Blanket

Blanket is an unlockable passive item added in The Binding of Isaac: Afterbirth †.

Effects[]

Heals one Red Heart.
Grants one Soul Heart.
Upon entering a Boss Room, grants a shield that blocks one hit, then disappears.

If the shield is not broken before leaving the room or entering the next floor, it will disappear by itself.
Reentering a boss room after the boss has been defeated will still grant a shield.
To quickly unlock this item, keep restarting Greed mode to enter its Curse Room which occasionally contains a bed.
In Greed mode, this item grants a shield only for the two boss fights on the final level. The shield does not activate for the regular boss waves on previous floors.
Does not grant a shield during The Beast fight.

Holy Mantle: The effect stacks, granting two shields in Boss Rooms.
Stop Watch: Blocking damage with the shield will activate Stop Watch's effect.
Holy Card: The effect stacks, granting two shields in Boss Rooms. However, the Holy Card effect works first and you will lose it even if you took only one hit.

Blanket has been added in Booster Pack #5, after the initial release of the DLC.
Blanket is based on this Steam Workshop item by P.5000 and Ratlah, originally known as Security Blanket.
This item is part of a set of bedtime-themed items, including Binky, Mr. Dolly, Night Light, and PJs.
This item may be a reference to Linus van Pelt's famous blue security blanket, as seen in Peanuts.

Bug!	Blanket doesn't work in Dogma and The Beast boss fights.